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United States Patent | 5,245,741 |
Smith ,   et al. | September 21, 1993 |
A shaft seal that includes a one-piece annular resilient seal element having an outer surface in static contact with a housing bore surface and an inner surface in rubbing contact with a circular shaft surface. A reinforcement ring is inserted into an internal cavity within the seal element to exert an outward radial force on an axial wall portion of the resilient seal element. The shaft seal can be manufactured at relatively low cost in small production quantities, using relatively low cost multi-purpose tooling.
Inventors: | Smith; Stanley N. (Farmington, MI); Laflin; William Q. (Grass Lake, MI); Arenz; Keith G. (Novi, MI) |
Assignee: | Federal-Mogul Corporation (Southfield, MI) |
Appl. No.: | 911995 |
Filed: | July 10, 1992 |
Current U.S. Class: | 29/450; 29/453; 264/163; 277/574 |
Intern'l Class: | B23P 011/02 |
Field of Search: | 277/37,152,153,1 425/DIG. 47 264/138,159,163,310,320 29/450,453 |
2950506 | Aug., 1960 | Corsi | 425/DIG. |
3275331 | Sep., 1966 | Mastrobattista et al. | 277/1. |
3614183 | Oct., 1971 | Berens | 277/37. |
3805352 | Apr., 1974 | de Montremy | 277/217. |
3857156 | Dec., 1974 | Clark | 264/159. |
4083567 | Apr., 1978 | Thumm | 277/37. |
4108447 | Aug., 1978 | Scholin | 277/153. |
4497496 | Feb., 1985 | Repella | 277/152. |
4501431 | Feb., 1985 | Peisker | 277/152. |
4542573 | Sep., 1985 | Bainard | 277/1. |
4723350 | Feb., 1988 | Kobayashi et al. | 277/152. |
4867926 | Sep., 1989 | Matsushima | 277/153. |
5104603 | Apr., 1992 | Saitoh | 425/DIG. |
Foreign Patent Documents | |||
0623835 | May., 1949 | GB | 277/153. |
0625604 | Jun., 1949 | GB | 277/153. |
2082270 | Mar., 1982 | GB | 277/153. |